Simultaneous use of different channels the same Module

I use DAQ 9178 chassis to control several module, 9421, 9481, 9207, 9263 and 9213. I wonder if I can call two or more different channels of the same Module at the same time without getting an error of conciliation? For example, DAQ assistant1 use 9213 channel 1 and DAQ assistant2 use 9213 channel 2 respectively. There is a chance that the program could call these two assistants at the same time, which will cause an error? What about the other module, 9421, 9481, 9207 and 9263?

Thank you

Haorong

Hi Haorang-

If you use separate tasks (via separate DAQ Assistant) then I strongly encourage you to ensure in your code that only access comes at a time. If they are running at the same time, then one of the tasks is likely to report a resource reservation error when he tries to set aside resources that are used by the second task.

There is no way to set a timeout for this case, as it would be dismissed by booking / committing the task (see DAQmx help for more information on the States) and not at the time of the reading or writing, so there is no way to wait for the data to be acquired or generated while the resources are released.

Tags: NI Hardware

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